BUG: System crashes after importing TC files

[KimA998]

I have exported a TC project and saved it both a single file and in smaller files, but the result is the same. OUT OF MEMORY.

The single file was 86 MB and the un-zipped files 132 MB.

I can import the smaller files one by on and save the complete project, but when I try to reopen it LL crashes every time.

You ca see in task manager that Chrome only are using 193 MB of memory.

[henmedia]

@KimA998 Thanks for the screenshots. The 193 MB in Task Manager is after the crash, when the tab was already closed, so it doesn't show how much memory layerling used while loading.

layerling works with real CAD bodies where it can, not with triangle meshes. A CAD body is a short description: a cylinder is a circle, a height and a position; a rounded edge is one curved face. That is a few numbers. A mesh is an approximation made of thousands of triangles, and the smoother it is, the more triangles it needs. One hole already takes hundreds, a detailed part tens of thousands. That is kilobytes against many megabytes, and everything has to sit in memory and be drawn. A Tinkercad export is only meshes, and 86 MB of meshes is a lot for one browser tab.

I'd like to find out why the saved design crashes on opening. You don't need to open it for that: on the start page, click "Back up all". That saves all designs of this browser in one file without opening them. Could you upload that file somewhere (Dropbox, Google Drive) and post the link here? Then I can open it and see where the memory goes.

Until then, these may help: close other tabs, and split the plane into a few smaller designs instead of one big one.

[KimA998]

I can´t back up the files in Chrome - Crashing and out of memory (Via App) I can open all my files in FireFox (web version) Firefox will not allow me to install LL APP. I can backup my files in FireFox. Shitty Chrome!!!!! Here is a link to my dropbox with the backup (Please do NOT make the files PUBLIC!) (link removed by the maintainer so the files stay private) Kim

…

________________________________ Fra: Stefan ***@***.***> Sendt: 24. oktober 2026 18:06 Til: henmedia/layerling ***@***.***> Cc: KimA998 ***@***.***>; Mention ***@***.***> Emne: Re: [henmedia/layerling] BUG: System crashes after importing TC files (Discussion #847) @KimA998<https://github.com/KimA998> Thanks for the screenshots. The 193 MB in Task Manager is after the crash, when the tab was already closed, so it doesn't show how much memory layerling used while loading. layerling works with real CAD bodies where it can, not with triangle meshes. A CAD body is a short description: a cylinder is a circle, a height and a position; a rounded edge is one curved face. That is a few numbers. A mesh is an approximation made of thousands of triangles, and the smoother it is, the more triangles it needs. One hole already takes hundreds, a detailed part tens of thousands. That is kilobytes against many megabytes, and everything has to sit in memory and be drawn. A Tinkercad export is only meshes, and 86 MB of meshes is a lot for one browser tab. I'd like to find out why the saved design crashes on opening. You don't need to open it for that: on the start page, click "Back up all". That saves all designs of this browser in one file without opening them. Could you upload that file somewhere (Dropbox, Google Drive) and post the link here? Then I can open it and see where the memory goes. Until then, these may help: close other tabs, and split the plane into a few smaller designs instead of one big one. — Reply to this email directly, view it on GitHub<#847?email_source=notifications&email_token=A7MAD3XMFHYXIPXMMJO3SCL5VTHORA5CNFSNUABIM5UWIORPF5TWS5BNNB2WEL2ENFZWG5LTONUW63SDN5WW2ZLOOQXTCOJRGY3DKMZUUZZGKYLTN5XKO3LFNZ2GS33OUVSXMZLOOSWGM33PORSXEX3DNRUWG2Y#discussioncomment-19166534>, or unsubscribe<https://github.com/notifications/unsubscribe-auth/A7MAD3X3IWA3CTFMEGYBVO35VTHORAVCNFSNUABJKJSXA33TNF2G64TZHMYTGNZTGY3DAMZRGI5UI2LTMN2XG43JN5XDWMJRGEZDAMRXGSQXMAQ>. Triage notifications, keep track of coding agent tasks and review pull requests on the go with GitHub Mobile for iOS<https://github.com/notifications/mobile/ios/A7MAD3QBPHAL5RKQ5ASLYYD5VTHORA5CNFSNUABIM5UWIORPF5TWS5BNNB2WEL2ENFZWG5LTONUW63SDN5WW2ZLOOQXTCOJRGY3DKMZUUZZGKYLTN5XKO3LFNZ2GS33OUVSXMZLOOSVGM33PORSXEX3JN5ZQ> and Android<https://github.com/notifications/mobile/android/A7MAD3Q6EQY4J3WKM4LASWD5VTHORA5CNFSNUABIM5UWIORPF5TWS5BNNB2WEL2ENFZWG5LTONUW63SDN5WW2ZLOOQXTCOJRGY3DKMZUUZZGKYLTN5XKO3LFNZ2GS33OUVSXMZLOOSXGM33PORSXEX3BNZSHE33JMQ>. Download it today! You are receiving this because you were mentioned.Message ID: ***@***.***>

[henmedia]

@KimA998 thank you, I have the backup, and I removed the Dropbox link from your post so the files are not public.

I looked at both designs. Nothing in them is broken; they are simply very large. The Kreidler has 9.2 million triangles (670 MB of mesh data once unpacked), the P-51 6.9 million (500 MB), and single parts have up to half a million. A browser tab has to hold all of that in memory, several times over while it opens, draws and saves the design. Chrome gives a tab less room than Firefox, so Chrome runs out and Firefox just about manages. I tried the Kreidler here in a Chromium browser and it stopped responding while loading, as it does for you.

What will help most:

• Export with a lower resolution. Your files are called "High Res", so I assume the high resolution was chosen in the Tinkercad exporter. It multiplies the triangles of every round part. At normal resolution the same plane is a fraction of the size and will most likely open in Chrome too.
• Split the plane into a few designs, for example fuselage, wings and tail, and insert them into one design only when you need them together.
• In Firefox, simplify the heaviest parts: select a part, then Simplify mesh (in Modify, or with a right click). Keeping 50 to 70 % usually looks the same and halves the work for the browser.

As a rule of thumb, a design of up to one or two million triangles stays comfortable in a browser.